Camera actuator and camera module including same

A technology of actuators and cameras, applied in the direction of the focus device of the camera, the focus device of the camera, and the projector, etc., can solve the problems of lens eccentricity, deepening lens eccentricity or lens tilt, no solution, etc., to prevent frictional torque, prevent The effect of lens off-center or lens tilt

Pending Publication Date: 2021-05-28
LG INNOTEK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the spherical center of the lens group deviates from the optical axis or the decenter (decent) of the tilt, that is, the lens tilt phenomenon)
As a result, viewing angle changes or focus misalignment can occur, adversely affecting image quality and resolution
[0007] On the other hand, increasing the separation distance in the area where friction occurs reduces the frictional torque resistance when moving the lens for the zoom function in the camera module, but reduces the frictional torque resistance when making the zoom movement or reversing the zoom movement. It will deepen the decentration of the lens or the tilt of the lens, so there is a technical contradiction
[0008] In particular, if a high magnification is required in the camera module, the stroke is increased than before, and if the weight of the camera module becomes larger, the movement itself becomes more difficult
However, there is no suitable solution for both high magnification and large weight
In particular, in the case of high magnification and heavy use, there is a problem that lens off-center or lens tilt becomes more serious

Method used

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  • Camera actuator and camera module including same
  • Camera actuator and camera module including same
  • Camera actuator and camera module including same

Examples

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Embodiment Construction

[0058] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings.

[0059] On the other hand, in the description of the embodiment, in the case where it is described as being formed "on / under" or "over / under" each element, it includes two parts directly contacting each other, or two parts being in contact with each other. One configuration structure indirectly forms one or more other configuration structures. Also, when expressed as "above / under" or "above / below", it may include not only an upward direction based on a configuration, but also a downward direction based on a configuration.

[0060] Furthermore, relative terms such as "upper / upper / upper" and "lower / lower / lower" as used hereinafter do not require or imply any physical or logical relationship or order between these parts or elements, which may be used in Distinguishes one part or element from another.

[0061] Also, in the description of the embodiments, terms such as "first...

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Abstract

An embodiment relates to a camera actuator and a camera module including same. An actuator according to an embodiment may comprise: a base; a lens housing disposed on the base; a guide pin disposed in the base; a ball disposed between the guide pin and the lens housing; a first yoke disposed in the lens housing; a magnet coupled inside the first yoke; and a coil part opposite to the magnet and fixed to the magnet while partially surrounding the first yoke. The embodiment may comprise a second yoke disposed under the first yoke and forming a closed loop together with the first yoke.

Description

technical field [0001] The present embodiment relates to a camera actuator and a camera module including the camera actuator. Background technique [0002] The camera module performs a function of taking pictures and saving the taken contents as images or videos, and is installed in mobile phones, laptops, drones and vehicles. [0003] On the other hand, mobile devices such as smartphones, tablets, and notebooks have built-in miniature camera modules, and the camera modules can perform an auto-focus function by automatically adjusting the distance between an image sensor and a lens. [0004] Recently, camera modules can perform a zoom function of zooming in or out by increasing or decreasing the magnification of the far focus point through a zoom lens. In recent years, there has been a growing demand for high-magnification zooms that are more than twice the magnification zoom performance of camera modules. [0005] On the other hand, a zoom actuator is used in a camera mod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232H04N5/225G03B13/36
CPCG02B7/09G02B27/646G02B7/021G02B7/023G03B2205/0069G03B30/00G03B3/10G03B5/00G03B2205/0046H02K41/031H02K16/00G02B7/08H04N23/57H04N23/60H04N23/55G03B13/36H04N23/54H04N23/676G03B2205/0007
Inventor 金昶年金敬源
Owner LG INNOTEK CO LTD
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